Likewise, the Kaikyokan Aquarium’s listless fish has long been the sole occupant of its tank. But what sets sunfish apart from many other solitary creatures is that they are often stimulated by ...

A solitary sunfish at an aquarium in southwestern Japan lost its appetite, began banging into the side of the fish tank and appeared unwell days after the facility closed last month for renovations.

SHIMONOSEKI, Yamaguchi -- A sunfish at a municipal aquarium undergoing renovation in this west Japan city became unwell, but recovered after its tank was decorated with staff uniforms and pictures ...